Stake puller machine



March 15, 1960 N. P. DANN ETAL 2,928,654

STAKE FULLER MACHINE Filed May 31, 1957 4 Sheets-Sheet 1 INVENTORS.NOAMA/V I? D/I/VN W ll 75/? I l/OOO 14 TTO/PA EYS March 15, 1960 N. P.DANN EIAL 2,928,654

STAKE FULLER MACHINE Filed May 31, 1957 4 Sheets-Sheet 2 INVENTORS. NORMM I? DAN/V WAL TEA I H000 ATTORNEYS March 15, 1960 N. P. DANN ETAL2,923,654

STAKE FULLER momma:

Filed May 31, 1957 4 Sheets-Sheet 3 M www- WALTEAJ. #000 v ldw kz wMarch 15, 1960 N. P. DANN EIAL STAKE FULLER MACHINE 4 Sheets-Sheet 4Filed May 31, 1957 INVENTORS NORMA/V I? 04 W41. 75/? I HOOD BY STAKEPULLER MACHINE Norman P. Dann, Cleveland Heights, and Walter'J.

Hood, Shaker'Heights, Ohio, assignors to The Cleveland Formgrader Avon,Ohio Application May 31, 1957, Serial No; 662,651

21 Claims. (Cl. Z'54 -18) This invention relates to a new and improvedstake 2,928,654 Patented Mar. 1 5, 196i! "'A'still further object of theinvention is to provide a stake or pin puller machine which iscompletely mechanpuller machine, and, more particularly, to a stakepuller machine especially adapted for removing concrete form stakes. I I1 In the-laying of concrete roads, aircraft runways, and like,constructions, it is common practice to pour the concrete between steelforms which are spaced parallel to each other and accurately laid on aprepared Surface. The steel side forms are usually aboutflten feet inlength and are securely held ,in place by means of a plurality of oneinch diameter steel stakes which are driven through suitable holes inthe forms and into the ground to a ical in construction and operationand which includes a three wheeled truck upon which all of the operativestructure of the machine is mounted, and, which truck iscons'tructed andarranged so as to' have two of the wheels ride in contact with theconcrete side forms, whereby, the stake removal reactive forces will betransmitted through said two wheels and the concrete side forms tother'oa'd bed, whereby, the machine may be used soon after the concretehas set without injury to the curing concrete. g

Other objects, featuresand advantages of this invention will be apparentfrom the following detailed description and appendedlclaims, referencebeing had to the accompanying drawings forming a part of thespecification wherein like reference numerals designate correspondingparts of the several views.

v In the drawings: 7

Fig. 1 is a perspe tive view'of a stake puller machine made inaccordance with the principles of the invention and showing the machinein an operative position at work on a roadway; F

Fig.2 is a rearelevational view, slightly enlarged and partly brokenaway, of the structure illustrated in Fig. l, taken-in the direction ofthe arrowmarked 2;

Fig. 3 isra partial, enlarged,-horizontal sectional view of thestructure illustrated in Fig. 2, taken along the line 3-3thereof,,and'lookinginlthe direction of the arrows; Fig.4 is a partial,enlarged, horizontal sectional view of theistructure illustrated in'Fig. 2; taken along the line 4-4 thereof, and looking. inthe directionof the arrows;

damage the new concrete. ;The stakes are removed from the forms eithermanually or by a power'machine. .When

the stakes are removed manually a 'two man team' is usually required andthe stakes are loosened byhitting them on the sides thereof Witha sledgehammer so as to loosen them, whereby, they maybe manually removed.-

The manualremoval of these stakes is a time consuming and laboriousprocess, especially when the stakes have set for long periods of time inheavy clay or rockylsoil.v Furthermore, the loosening of the stakes by.hitting them on the side with a'sledge hammer is injurious to the stakesand to the steel forms. Heretofore, it has been proposed to removeconcrete form stakes by means of complicated, and expensivehydraulically or pneumatically operated. power machines. Machines of thelast mentioned/type have proved to be expensive, slow and cumbersome inoperation, and heavy in weight. Accordingly, it is the primary object ofthis. invention to provide a novel andimproved mechanically operatedmachine for removing concrete form stakes and the like which will becompact and rugged in construction, lightweight, efiicient in oper ationand, which may be operated by one person, whereby, savings in labor maybe achieved. i

It is another-object of'this invention to provide an' improved stakepuller machine which will be physically small in construction,economical of manufacture, .and, whichmay be manually pushed from staketo stake and be reliable and serviceable, and capable of withstandingroadconstruction conditions. f

It is a further object of this invention to provide a portable poweractuated stakepuller machine which is powered by a small gasoline enginewhich is adapted to drive a novel inertia wheel means for providing aconstant and smooth flow of power to a stake grappling means which inturn is adapted to exert a vertically upwardly directed removal force ona stake engaged": by the stake grappling means.

Fig.5 is a partiahfenlarged, horizontal sectional view of the structureillustrated in Fig. 2, taken along the line 5 5 thereof, and lookinginthe direction of the arrows;

)Fig'. dis a top plan view, with parts broken away, of the structureillustrated in Fig; 2, taken in the direction of the arrow marked 6; I 1

Fig. 7 is a fragmentary, enlarged, elevational view, partly-in section,of the structure illustrated in Fig. 6, taken along the line'77 thereof,and looking in the direction ofthearrowsi V 'Fig'.' 8 is a fragmentary,enlarged, horizontal sectional viewfo'f the structure illustrated inFig. 7, taken along the line" 8-8,thereof, and looking in. the directionof the arrows;

fgFig'. 9 is an elevational sectional view of the structure illustratedin Fig.' 8, taken along the line 99 thereof, and looking in thedirection of the arrows;

Fig. 10 is a fragmentary, end elevational .view of a modified truckwheel employed in the invention;

Fig; 'll is an enlarged end elevational view of the .truck wheelillustrated in Fig. '10 and showing the parts thereof disassembled fromeach other; and,

Fig. 12 is a side elevational view of the truck wheel illustrated inFigs. 10 and 11.

Referring now to the drawings, a stake puller machine made in accordancewiththe principles of the invention is illustrated in operative.position on a roadway 10, as shown in Figs. 1, 2 and-6. The numeral 11designates,'

generally, a concrete road side form which is illustrative.

' portion 13. The forms 11 each further include the outer ity' ofstakepock'ets, generally designated by the numeral 16, and these pocketsare fixedly secured to the leg por tion 14 and the base portion 15 byany'suit'able means; as by welding. As best seen in Fig. 1, each of thestake pockets 16 comprises the vertical spaced apart plates 17 and 18,the upper ends of which are connected by an integral horizontal plate,as 19. A stake hole 20 is formed through the plate 19 and is, alignedwith a similar stake hole 21 in the base portion 15. The forms 11 aresecurely retained in place by means of the stakes or pins 22 which areadapted to be disposed in the holes Zlland 21- and, driven'therethroughand downwardly into the ground.

As shown in Figs. 1, 2 and 6, the stake puller machine 7 of the presentinvention comprises a wheel supported truck, generally indicated by thenumeral 23, which includes a substantially triangularly shaped frame.The truck frame comprises the horizontal, longitudinally dis posedchannel rail 24 and the front and rear transversely i 4 V U-shaped slot55 which extends inwardly from the forward edge thereof. aFixedlymounted on the, upper end of the vertical plate 53, as by welding, arethe spaced apart horizontally disposed sleeves 56 and 57. A cableconnector member as 58 is disposed with the lower end thereofbetween'the horizontal sleeves 56 and 57 and is hingedly connectedthereto, as by means of the bolt 59 and nut 60. Fixedly connected by anysuitable means to the upper end of the cable connector member 58 is apuller cable 61 which is adapted to be maintained in a verticallydisposedposition by means of the cable guide means, generally designatedby the numeral 62.

guidance to the cable 61 and comprises the horizontal plate 63 and thevertically disposed spaced apart plates or arms 64 and 65 which arefixedly connected thereto by any suitable means, .as by welding. Fixedlymounted disposed channel rails 25 and 26, respectively, 'the alongitudinally disposed vertical plate 27. F'The various aforementionedframe elements arefixedly. se'euredtogether by any suitable means, as bywelding. 7

As best seen in Figs.,1 and 2, the left'side of the truck 23 issupported by a pair of wheel assemblies, generally indicated by thenumerals 28 and 29. The wheel assembly 28 comprises the longitudinallydisposed wheel 30 which is rotatably mounted on the axle 31 which iscarried by the two vertical laterally spaced apart 7 secured to theplate 34 by means, of the bolts- 35 and between the arms 64 and 65, asby welding, isthe block 66 onthe-outer face of which is rotatablymounted the -'two adjacently disposed guide rollers 67 and 68. Each ofthe guid e rollers 67 and 68 is provided with ,a peripherally disposedcable groove .69. The guide rollers .As shown in Figs. 1, 2 and 6, thecable guide means 62 is mounted onthe outer side of a platform formed onthe truck- 23- and which includes the horizontal angle rails 72 and 73.The outer ends of the horizontal rails,

72 and 73 are fixedly supported on the horizontal truck rail 24 by meansof the spaced apart vertical angle rails nuts 36. The plate 34is-fixe'dly secured to the lower side of the forward endrof the anglerail 24 by any. suitable means, as by welding. The wheel assembly 291sconsjtructed in the same manner as the wheel assembly andthecorresponding parts are marked with similar reference numerals, followedby the small letter a.

As best seen in Figs. 2 and 6, the right side of the truck 23 issupported by a caster wheel assembly, generally indicated by the numeral37'. The caster wheel assembly arm 43' is integrally'formed on. theupper end. of the vertical arm 41 and extends inwardlytherefrorn andcarries a fixedly mounted upwardly extended vertical shaft 44 which issuitably rotatably journalled in the vertical sleeve 45 which is fixedlysecured to the outer face of the frame plate 27 by any suitable means,as by welding; The shaft 44 is suitably retained in the sleeve 45, as bymeans of the nut 46.

As shown in Figs. 1, 2 and 6, the truck 23 is provided with a pair ofvertically disposed guide members, generally indicated by the numerals47 and 48, whichare adapted to provide tracking of the wheels 30'and.30a on the upper face 13 of the forms 11; The guide members 47 and48 permit use of'wheels without rim flanges which would undesirably cutinto the finishedsurface of the road 10. 'The guide members 47 and 48each com-' prises a vertical guide sleeve .49 which is welded to theouter side of the longitudinal channel rail 24; A guide pin 50 is freelyslidably mounted in each of the guide sleevesl49 with the lower endthereof being adapted to slidably engage the outer face of the slopingleg portion 14 of the forms 11, at a point above the stake pockets 16.

of the' present invention is provided with a stake grap pling member orbracket, generally indicated by the numeral 52, which comprises thevertical plate 53 and the integral downwardly and outwardly slo ingplate 54." The sloping plate 54 is provided with afgrwaifdly'fac iug orlegs 74 and to which they arefixedly secured, as

by welding. The inner ends of the horizontal angle rails :72 and 73 arefixedly supported on the truck rails 25 and 26 by means of the anglerails 76. and 77, respectively,

and the aforementioned rails are fixedly connected tothe horizontalsleeve 86 which is fixedly mounted on the t outer end of the shaft '87by means of the washer 88 and gether as by welding. The outer ends ofthe platform "rails 72 and) 73 are interconnected by means of thehorizontal plate 78 which is fixedly connected thereto,

as by welding, andon which the cable guide means 62 is fixedly mounted,as by welding or suitable bolts and nuts s a in Figs.;l, 2, 4 and 6, theupper end of the is "threadably mounted on the horizontal outwardlyextended arm 81. The cable connector member 79 is operatively held onthe pin 80 by means of the washers .82 and 83 and the bolt 84. The arm81 is fixedly mounted, as by welding, on the lower endIof the pullerlever 85 and, as best seen in'Figs. 1 and 3, the upper end of the lever85 is fixedly mounted, asby welding, on

the bolt 89.

, As shown inFigs. 1 and '6, the shaft 87 is rotatably journalle'din thebearing 90 which, is fixedly secured on on the platform on thetruck 23.The aforementioned -=first column comprises the longitudinally spacedapart .vertical angle rails 94 and 95, the upper ends of which slopetoward each other. The-plate 93 is fixedly secured I to the rails 94 and95 by means of the' bolts 96 and the nuts 97. The-plte 93 is furthersupported on the platform by means of the spaced anglebrackets '98 whichare disposed on opposite ends of the cable guide means 62 andwhich aresecured to the plate 93 by the, bolts 99. The brackets 98 are, fixedlysecured to the plat: form plate'lfl by any suitable means, IasYbywelding.

Asshownin Figs. 6arld 8, the shaft .87 is operatively connected, to anddriven by a single revolution clutch generally designated, by thenumeral 100. The operation oedema-ch 10 wil be tnore fully explained thebolts 103 and nuts 104. As shown in Figs. 1, 2, and 6, the verticalplate 102 is part of a second column fixedly mounted on the platform onthe truck 23. The second column is spaced inwardly from the first columnand comprises the longitudinally disposed horizontal angle rail 105which'is fixedly secured between the platform rails 72 and 73 by anysuitable means, as by welding. The second column further includes thelongitudinally spaced apart vertical angle rails 106 ,and 107, the lowerends of, which are fixedly secured to the platform rails 72 and 73,respectively, as by welding, and, the upper ends of which slope towardeach other. The plate 102 is fixedly secured to the vertical rails 106and 107 by means of the bolts 108 and nuts 109. The first and secondcolumns are interconnected by,means of the horizontal transverselydisposed angle'rails 110 and 111 which are fixedly secured to thecolumns as by welding.

As shown in Figs. 2, 6 and 8, and as more fully explained hereinafterthe clutch 100 is driven by the gear 112 which is preferably of a 'sizehaving 42 teeth thereon.

The gear 112 is meshably connected to and driven by the pinion gear 113which is fixedly mounted on the shaft 114 by means of the usual key 115.The gear 113 ispreferably of a size having 12 teeth thereon. The shaft114 is rotatably journalled at one end thereof in a bearing member (notshown) similar to bearing member 101 on the inner side of the verticalplate 93, and it-is secured in place by means of the bolts 116 and nuts117. As shown in Fig. 1, theother end of the shaft 114 extends throughthe hole 118 in the vertical plate 102 and this end is rotatablyjournalled in the bearing member 119 which is fixedly secured on theinner side of the vertical plate 120 by means of the bolts 121 and nuts122.

As shown in Figs. 1, 2 and 6, the plate 120 is part of a third columnwhich is disposed inwardly of the second column or toward the right sideof the machine as viewed in Fig. 2. This third column comprises thelongitudinally disposed horizontal angle rail 123 which is fixedlysecured between the platform rails 72 and 73 'by any suitable means, asby welding. This third column further includes the longitudinally spacedapart vertical angle rails 124 and 125, the lower ends of which arefixedly secured to the platform rails 72 and 73, respectively, as bywelding, and, the upper ends of which slope toward each other. The plate120 is fixedly connected to the vertical rails l24 and 125 by means ofthe bolts 126 and the nuts'127. v

As viewed in Fig. 2, abull gear 128 is fixedly mounted on the shaft 114by means of the key 129, between the aforementioned second and thirdcolumns The bull gear 128 is preferably of a size having 180 teeththereon. The hull gear 128 is driven by apinion gear 130 which isfixedly mounted on the horizontal shaft 131 by means of the lock key132. The pinion gear 130 is preferably of a size having teeth thereon.As viewed in Fig. 2, the left end of the shaft 131 is rotatablyjournalled in the bearing member 133 which is fixedly mounted on theouter side of the vertical plate 102, as by means of the bolts 134 andnuts 135. The right end of the shaft 131.is rotatably journalled in abearing member 136 which is fixedly mounted on the inner side of thevertical plate 120, by any suitable means. Fixedly mounted on the-shaft131 is afiywheel or inertia wheel 137, and this wheel is secured on theshaft 131 by means of the lock key 138. .As shown in Figs. 2 and 6, theshaft 131 extends through the vertical plate 120 and carries on theright end thereof the sprocket wheel 139. The

sprocket wheel 139 is fixedly secured to the shaft 131 byf means of thelock key 140. The sprocket wheel is'ili tiirndriven by-a drive memberforming a part of the The inner-end, of the shaft 87"is rotatably- 6clutch 142 which is manually operable by meansofthe control lever 143.The clutch 142 is a fricti'ontype clutch and is driven by means of theengine 144 to which it is connectedby means of the engine output shaft,145.

144 is suitably fixedly mounted on the truck 23 by any; suitable meansand is provided with the usual gas tank 146. The clutch 142may besupported by any suitable means, as by means of the bracket 147 which iscon nected to the engine 144 by means of the bolt 148and,

to the clutch by means of the bolt 149. The engine 144 is preferably athree horsepower, four cycle gasoline engine, and engines of this typeare readily available on the market. Any conventional type clutch may beemployed to carry out the function of clutch142, and a suitable clutchfor this purpose is one available on the market manufactured by theRockford Clutch Division of Borg- Warner Incorporated, Rockford,Illinois, and known as the Rockford Sprocket Over Center Clutch? r Asshown in Figs. 7, 8 and 9, the single action clutch 100 includes asleeve bearing 150 which is carriedinside of the collar 151 of a drivingmember on which the gear 112 is fixedly mounted, as by means of the lockkey 152 and the lock screws 153. The driving member is con tinued in theform of an enlarged annular casing 154, the inner face of which may belined with a layer 155 of suitable contact material. The shaft, 87 isadapted to be rotatably mounted relative to the drivingmember, and thisshaft extends through the sleeve bearing 150.- Secured against movementwith respect to the shaft 87 is a sleeve 156 which is fixed to the shaft87 by means of the lock screw 157 and the lock key 158. Fixedly mountedon the sleeve 156, by means of the lock key 160, is an annular cam 159.The cam 159 is provided with a plurality of cam faces 161 and, uponalternate cam faces 161, are rollers 162 which are retained againstundue displacement by means of a collar or confining ring 163 havingopenings such that the rollers 162 may be projected to extend beyond thesame and into engage: ment with the layer of contact material 155. Thecollar 163 may be secured in position by means of an annular plate 164which rotatably encircles the sleeve 15 6 and which may be attached tothe collar 163 in anyisuitable' manner, as, for example, by thebolts'165. The collar- 163 has its several sections integralor'otherwise fixed with respect to a plate 166 which rotatably encirclesthe sleeve 156. Y i

It will be seen that if plate 166 be rotated with re 154 is preferablygrooved' 'to' receive a layer of oil retaining material 167, to whichoil may be supplied in any desired manner. The outer face of the oilretaining material 167 contacts the inner face of plate 166. If

The plate 166 is shifted relative to the shaft 87 by means of thefollowing described structure. As shown in Fig. 8, the outer face of theplate 166 is provided with a radially extending groove or slot 168within which is disposed a block 169 which is pivotally supported by thepin 170 which is in turnmounted on a cam'plate. 17-1. The cam plate 171encircles the sleeve 156 and is supported by means of the pin 172 whichis mounted upon a hub plate 175. The hub plate 173 is fixed with respectto the sleeve 156 in any suitable'manner. One

end of a spring 174 issecured to the hub platc",173'

' by being fastened to the pin 175 which extends from is fixed to thepin 176 which is mounted on-the cam plate 171. The cam plate' 171 isformed with an an nular cam surface 177 which terminates in a raisedpo"r-' with which a trip bar or ,rod'179- tion or shoulder 178 I isadapted to beengaged;

The purpose of the clutch 142 is to disengage the I operating load whenstarting the engine 144. The engine.

As shown in Fig. 7, a support bracket 180 is fixedly.

mounted -on the angle plate 111, as by welding, and carries on the upperend thereof a fixedly mounted block 181 through which; is formed thehole 182. The trip bar' 179 is slidably mounted through the hole 182 andis provided on the. inner 'end thereof with a fixedly mounted annularflange 183. The trip rod- 179 is normally biased inwardly to anoperative engagement with the shoulder 178 on the cam plate 171, bymeans of the spring 184.

handle portion 189. It will be seen that as long as the trip bar 179-isin the position shown in Fig. 7, the cam plate 171 will remaininoperative and the gear 112 may drive the casing 154 but the shaft 87will not be driven since the cam rollers 162 are not engaged with thecontact material 155. When it is desired to rotate the shaft 87, theoperator merely pushes inwardly on the operating lever handle 189,whereby, the trip bar. 179 will be moved outwardly and'the spring 174will contract and will rotate the cam plate 171 in a counter clockwisedirection, as shown by the arrow in Fig. 7. The afore- .leve'r 185extends downwardly to form an operating revolution clutch operatinglever handle 189, whereby, the clutch 100 will operate. The operatorimmediately releases the lever handle 189 and the clutch 100 will rotatethe lever 85 through one revolution from the solid line position shownin Fig. 2 up to the dotted position designated by the numeral 190, andback down-to the solid line. position. Some pins may pullout of theground with onlyone revolution of the puller lever 85,

as shown by the dotted line stake designated by the numeral 191 in Fig.2. If a long stake is being pulled from the ground, a number ofrevolutions maybe required. 'In the latter case, the stake pullerbracket 52 which is carried on the lower end of the cable 61, will slidedown the stake after each revolution and will remain engaged therewithas the puller lever 85 makes 1 each down stroke. It will be seen thatthesloping bracket plate 54 frictionally engages thestakes 22 between eacht of'the side faces of .the-U-shaped slot 55- and exerts an describedaction will cause the cam 159 to be correspondstop because the inner endof the trip bar 179 will eventually follow the cam surface 177 down tothe shoulder 178, whereby, the clutch will be disengaged and the shaft87 ,will be stopped. A single revolution clutch of the aforedescribedtype is readily available on the market .and the clutch 100 describedhereinbefore is a preferable clutch ofthis kind, and is more fullydescribed in detail in the US. patent to Richard G. Dickens, No.2,140,737.

In the use of a stake puller machine of the present invention, themachine would be positioned on top of.

i the concrete forms 11' with the wheel assemblies 28and 29 riding onthe upper face 13 of the forms. The concrete road 10- which has set,will support the castor wheel assembly 37. The clutch-142 isfirstdisengaged and the gasoline engine 144 is started after which theclutch 142 may be shifted to the operative position. The drive from theengine 144 is transmitted through the friction clutch 142 and, by meansof the chain 141 and sprocket 139, it is transferred to theshaft 131 andthe inertia Wheel 137. The inertia wheel 137 furnishes a. constantpotential force capable of supplying sufiicient energy to the pin pullersystem to overcome the load of pulling a stake out of the ground. Thedriving force is further transferred by means of the pinion 130 to thebull gear 128 and to the intermediate shaft 114 and thence by means ofthe pinion 113 and gear 112 to the single revolution clutch 100. Theaforedescribed gear train is adapted to reduce the revolutions perminute put out by the gasoline engine 144. v v 2 After the engine 144has been started and the clutch l 42has been shifted to the operativeposition so as to drive the aforementioned gear train, the machine ismanually pushed to a positionbeside a' stake as shown in Figs. 1 and ,2.The puller lever 85 will be in the solid line position shown in Figs. -1and 2, and the operator may manually position the puller bracket 52 soas to crete form having a vertical outer wall 193 which is integral withan upper horizontal face 194. The numeral upward removal forcelthereonwhen cable 61 is moved upwardly. The friction grip of the bracket 52 onthe stakes 22 is further effected because of the fact that the bracket52 is hingedly connected to the cable connector 58, whereby, saidfriction grip is elfected on the upward erated by only one man and thatthe number of stakes which can be removed per hour is greatly increasedby the use of this machine, compared to the removal rate when the stakesare manually removed'. The present stake puller is simple'to operatesince the operator, in order to remove a stake, has merely to engage thepuller bracket 52 therewith, and to operate the single revolution.

clutch handle 189 either singly or repeatedly, as desired. The operationof the present invention is completely based on'mechanical forcestransmitted through gears, shafts and clutches. i

A modified wheel assembly adapted for use with the pin puller of thepresent invention is shown in Figs. 10, 11 and 12. In Fig. 10, thenumeral 10 indicates a concrete roadway which has been constructedbetween concrete forms having a cross sectional shape as shown. in"

this figure. The numeral 192 generally designates a con- 195 designatesa horizontal mounting plate similar to the plates-33 illustrated inFig. 1. Fixedly mounted on the lower side of the plate 195, toward theinnerside thereof, is a depending support arm 196. Fixedly'moiiuted onthe inner face of the arm'196, as by welding, is a journal selectedadjusted position in the journal member 197 by' means of the lock bolt201.. The shaft 200 extends through a suitable aperture as 202 in thesupport arm 196. A rubber'tired wheel 203 is suitably rotatably mountedon the outer endof the shaft 200 and is provided with a removable guideflange 204. The flange 204 is adapted to be mounted'on the hub 205against engage the stake 22 in the slot 53 in the bracket plate 54. Theoperator then pushes inwardly on the single" the outer face of the wheel203. As best seen inFigs.

11 and 12, the flange 204 is removably mounted on'the.

wheel 283 by means of the bolts 206 and the wing nuts 207. The wheel 203is fixed on the shaft 200 against is preferably adaptedfor use with aconcrete1 form, having a] vertical outer legfor wall as 193. As clearlyshown in'Figs. 10, 11 and 1,2, the removable 11 86.404 is essenceadapted to extend beyond the periphery of the wheel'203 and to abut theouter face of the concrete 'fornr wall- 193, whereby, it serves as aguide means for guiding thepin puller machine as it is pushed along theconcrete forms. It will be obvious that flanged guide wheels of the typeillustrated in Figs. 10, 11 and 12 may be substituted for the wheelassemblies 28 and 29 illustrated in Fig. 1, when desired. When flangedwheel assemblies as shown in Figs. 10, 11 and 12 are used, the guidemembers 47 and 48, as shown in Fig. 1, are deleted. It will be seen thatthe flanged wheel 203 may be adjusted relative to the machine frame bysliding the shaft 200 in the journal member 197. The purpose of thisadjustment is to permit positioning of the puller cable for dilferentsize road forms.

While it will be apparent that the preferred embodiments of theinvention herein disclosed are well calculated to fulfill the objectsabove stated, it will be'appreciated that the invention is susceptibleto modification, variation and change without departing from the properscope or fair meaning of the subjoined claims.

What we claim is:

1. A stake puller machine comprising: a wheel supported truck; an enginemounted on said truck; a gear train operatively mounted on said truck;an inertia wheel rotatably mounted on said truck and operatively'comnected to said gear train; means interconnecting said gear train andinertia wheel and said enginefor driving said gear train and saidinertial wheel; and, a stake'grappling means operatively connected tosaid gear train.

2. A stake puller machine-comprising: a wheel sup-r ported truck; anengine'mounted on said truck;, a gear" train operatively mounted on saidtruck; an inertiawheel.

rotatably mounted on said truck and operatively connected to said geartrain; means interconnecting said gear train and inertia wheel and saidengine for driving said gear train and inertia wheel; a singlerevolution clutch operatively connected to said gear train; and, a'stake-- grappling means operatively connected to said clutch; 3. A stakepuller machine comprising: a wheel .supported truck; an engine mountedon said truck; a gear train operatively mounted on said truck; aninertia .wheel rotatably mounted on said truck and operatively connectedto said gear train; means interconnecting said gear train and inertiawheel and said engine, including a clutch,

for driving said gear train and inertia wheel; a single revolutionclutch operatively connected to said gear train;-.

- eratively mounted on said truck; adrive means interconnecting saidfirst clutch and said gear train and inertia wheel, whereby, said enginemay drive said inertia'wheel and gear train; a second clutch.operatively connected to said gear train; and, a stake grappling meansmounted on said truck and connected to and operable by said secondclutch. i

5. A stake puller machine comprising: a wheel supported truck; an enginemounted on said truck; a first clutch operatively connected to saidengine; an inertia wheel rotatably mounted on said truck; a gear trainoperatively mounted on said truck; a sprocket and chain drive meansinterconnecting said first clutch and said gear train and inertia wheel,whereby, said engine may drive said inertia wheel and gear train; asingle revolution clutch operatively connected to said gear train; and,g

a stake grappling means mounted on said truck and connected to andoperable by said single revolution clutch.

6. A stake puller machine comprising: a wheel supported truck; an enginemounted on said truck; a gear train operatively mounted on said truck;an inertia wheel nected "to said ear" train; means interconneetingsaitigeartrain and-inertia wheel and said engine for driving said geartrain and inertia wheel; a single revolution clutch operativelyconnected to said gear train; a stake grappling bracket; a rotatablemember mounted on said truck and operatively connected to said singlerevolution clutch for. selective rotation of said member; and, meansinterconnectingsaid grappling bracket and said member, whereby, whensaid member isrotated said grappling bracket will be actuated upwardlyand downwardly.

7. A stake puller machine comprising: a Wheel sup ported truck; anengine mounted on said truck'; a geartrain operatively mounted on saidtruck; an inertia'wheel' rotatably mounted :on said truck; a firstclutch operativ'e- 1y connected to said engine; a sprocket and chaindrive:

means interconnecting said first clutch and said gear train and inertiawheel, whereby,said engine may drive said inertia wheeland gear train; asingle revolution clutch operatively connected to said gear train; astake grappling bracket; a rotatable member mounted on said truck andoperatively connected to said single revolution clutch for,

selective rotation of said member; and, means interconnectingsaidgrappling bracket and said member, where-: by, when said member isrotated said grappling bracketr will be actuated upwardly anddownwardly.

8. A stake puller machine comprising: a wheel sup-.'

ported truck; an engine mounted on said truck; a first clutchoperatively connected to said engine; a first shaft rotatably mounted onsaid truck; an inertia wheel fixedly tion clutch for selective rotationof said member; a stake grapplingbracket; and, means interconnectingsaid grap- V pling bracket and said member, whereby, when said member isrotated said grappling bracket will be actu-- ated upwardly anddownwardly. g t

9. A stake puller machine comprising: a wheel supported truck; an enginemounted on said truck; a first.

clutch'operatively connected to said engine; a first shaft rotatablymounted on said truck; an inertia wheel fixedly; mounted on said firstshaft; a drive means interconnecting said first clutch and said firstshaft; a second shaft rotatably mounted on said truck; a first drivengear on said second shaft; a first drive pinion on said firstshaftmeshably' engaged with said first driven gear; a singlerevolutionclutch operatively mounted on said truck; a second driven gearoperatively connected to said last named clutch; a second drive pinionon said second shaft;

meshably engaged with said second driven gear; a rotat able membermounted on said truck and operatively connected to said singlerevolution clutch for selective rotation ofsaidlmember; a stakegrappling bracket; and, means interconnecting said grappling bracket andsaid memben'whereby, when said member isv rotated said; grapplingbracket will be actuated upwardly and downi wardly.

10. The invention as defined in claim 9, wherein: said meansinterconnecting said grappling bracket and said rotatable memberincludes a cable connected at one end thereof to said rotatable memberand at the other end thereof to said grapping bracket; and, a cableguide means mounted on said truck adapted to guide said cable wherebythe grappling bracket will be actuated vertically.

11. A stake puller machine comprising: a wheel supported truck; anengine mounted on said truck; a first clutch operatively connected tosaid engine; a first shaft rotatably mounted on said truck; an inertiawheel fixedly mounted on said first shaft; a drive means interconnectingsaid first clutch and said first shaft; a second shaft rotatably mountedon said truck; a first driven gear 11 a Y a on said second shaft; afirstdrivepinion on said first shaft meshably engaged with said first drivengear; a single revolution clutch operatively mounted on said truck; asecond driven gear operatively connected to said last named clutch; asecond drive pinion on said chaise-r- 12 17. Ian stake puller machineprovided with a selfcontained power drive means: a single revolutionclutch 1 operatively connected to said power drive means; a hori secondshaft meshably engaged with said second driven 7 .cal direction whensaid lever is rotated by said third and outwardly slopingportion-connected to said vertically disposed portion, and, said slopingportion being provided with a stake receiving slot.

13. The invention as defined in claim 12, wherein: the

upper end of said cable is pivotally connected'to said lever. A

14. In a stake puller machine provided with a 'selfcontained power drivemeans; a single revolution clutch operatively connected. to said powerdrive means; a horizontal shaft rotatably mounted onsaid machine andbeing connected to said clutch for selective rotation of said shaft; alaterally extended lever fixedly mounted on said shaft for rotationtherewith; a stake grappling bracket; and, means interconnecting saidgrappling bracket and said lever, whereby, when said lever is rotatedsaid grappling bracket will be actuated upwardly and down wardly. V

zontal shaft rotatably mounted on said machine and being connected to'said clutch-for selective rotation of said shaft; a laterally extended:lever fixedly mounted on said shaft for rotation therewith; a cableconnector rotatably mounted on said lever; a cable having one endthereof fixedly connected to said cable connector; a grappling brackethingedly connected to the other end of said cable; saidgrappling'bracket including a vertically disposed portion and adownwardly and outwardly sloping portion connected to said verticallydisposed portion;

said slopingbracket portion being provided with a stake.

receiving slot; and, a cable-guide means for guiding said cable so thatthe grappling bracket will be moved vertically when said lever isrotated to move the cable upwardly and downwardly.

18. In a machine for pulling stakes from road forms, a support truckprovided with a pair of wheels on one side thereof adapted to roll 'onthe road forms; a first column mounted on said truck along said one sidethere of; a horizontal shaft rotatably mounted on said first column; alaterally extended lever fixedly mounted on said shaft; a pin .fixed onthe outer end of i said lever and extended outwardly of said one side ofsaid truck;

a cable connector rotatably mounted on said pin; a cable fixedlyconnected to said cable connector; a stake grap- :15. In a stake pullermachine provided with a-self-L contained power drive means: a singlerevolution clutch operativ'ely connected to said power drive means; ahorizontal shaft rotatably mounted on said machine and being connectedto said clutch for selective rotation of" said shaft; alaterally'extended lever fixedly mounted on said shaft for rotationtherewith; a cable-connector thereof fixedly connected to said cableconnector; a stake grappling bracket; and, means for hingedlyjcounectings'aid cable to said grappling bracket.

. 16. In a stake puller machine provided with a self-- contained powerdrive means: a single revolution clutch operatively connected to saidpower drive means; a horizontal shaft rotatably mounted on said machineand being connected to said clutch for selective I rotation of plingbracket hingedlyconnectedto said cable; a cable guide means on saidtruck for guiding said cable so that the grappling bracket will be movedvertically when said lever is rotated to move the cable; and, a powerdrive means onsaid truck operatively connected to. said shaft for,selective rotation thereof.

19. The invention as set forth in claim l8,wherein:' said power drivemeans includes, a single revolution f clutchoperatively connected tosaid shaft, a gear train 7 operatively connected to said clutch, and,anengine op-.

eratively connected to said gear train. 7

20. The invention as set forth in claim 19, wherein:

c said machine includes, a guide means mounted on said rotatably mountedon said lever; a cable having one end truck and adapted to'slidablyengage the roadforrn's.

21. The invention as set forth in claim 19, wherein: said machineincludes, a guide means mounted on each of said pairof wheelsadapted toroll on the road forms with said guide means being adapted to engagetheouter side of theroad forms.

References Cited in the file of this patent- UNITED STATES PATENTS

